Don't make people think you were the first to find out about this, i've known it for a long time, haven't posted since i thought it was like, well, Common Sense. got a proof here:
taken right from Wow-Europe forums just being one of the billions of posts about this topic on the internet. (scroll down and a fellow warrior posts his experiense with it)1. Get second wind
2. Pull a servant in the blasted lands
3. Pull a shadowsworn thug in the blasted lands
4. Have both of them hit you while you hit the servant
5. Smile as the thug stuns you and procs second wind, which keeps your HP above 95%
6. Go AFK for an hour.
Also: Paladins can judge Seal of light to obtain same effect.